TY - JOUR
AU - 
AB - Yohai Roichman, Ilias Cholis, and David G. Grier Department of Physics and Center for Soft Matter Research, New York University, 4 Washington Place, New York, NY 10003 The holographic optical trapping technique creates arbitrary three-dimensional con¯gurations of optical traps, each with individually speci¯ed characteristics. Holographic modi¯cation of the in- dividual traps' wavefronts can transform conventional point-like optical tweezers into traps with di®erent structures and properties, and can position them independently in three dimensions. Here, we describe a technique for rapidly characterizing holographic optical traps' three-dimensional inten- sity distributions. We create volumetric representations by by holographically translating the traps through the optical train's focal plane, acquiring a stack of two-dimensional images in the process. We apply this technique to holographic line traps, which are used to create tailored one-dimensional potential energy landscapes for mesoscopic objects. These measurements highlight problems that can arise when projecting extended traps with conventional optics and demonstrates the e®ectiveness of shape-phase holography for creating nearly ideal line traps. A single-beam optical trap uses forces exerted by fo- trapping technique [6, 7], shown schematically in Fig. 1. cused beam of light to con¯ne a small object to a particu- Here, a beam of light from a frequency-doubled 
TI - Volumetric imaging of holographic optical traps
JO - Optics Express
DO - 10.1364/oe.14.010907
DA - 2006-10-30
UR - https://www.deepdyve.com/lp/unpaywall/volumetric-imaging-of-holographic-optical-traps-AdMpczkq6l
DP - DeepDyve
ER -